Biology - Mock Test 266

Question 2651

In an aqueous environment the most stable tertiary conformation is that in which ______ amino acids are buried inside the conformation?

A) Hydrophobic B) Hydrophilic C) Basic D) None of these

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Question 2652

Which structure of protein gives information aboutnumber and sequence of amino acids in it?

A) Primary structure B) Secondary structure C) Tertiary structure D) Quaternary structure

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Question 2653

An insulin molecule consists of _____ polypeptide chains?

A) 1 B) 2 C) 3 D) 4

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Question 2654

Total number of amino acids in a hemoglobin molecule are?

A) 554 B) 564 C) 574 D) 584

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Question 2655

A bond formed by linkage between -OH of carboxyl group of one amino acid and H of amino group of another amino acid which releases water is called?

A) Phosphodiester linkage B) Glycosidic bond C) Peptide bond D) Hydrogen bond

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Question 2656

In Glycin an amino acid R group is replaced by?

A) H B) CH3 C) COOH D) C = O

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Question 2657

Total number of amino acids discovered so far in cells and tissues are?

A) 20 B) 25 C) 150 D) 170

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Question 2658

The element in basic structure of proteins which differentiate them from carbohydrates is?

A) C B) S C) H D) N

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Question 2659

Proteins are polymers of?

A) Fatty acids B) Isoprenoid units C) Amino acids D) Nucleotides

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Question 2660

Proteins comprise of _____% of the total dry weight of a cell?

A) 40% B) 50% C) 60% D) 70%

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